Home / 13,420.84-20,117.48-4,650.96

Finding the Fourth Proportional to 13,420.84, 20,117.48 and 4,650.96

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Solution

The fourth proportional to 13,420.84, 20,117.48 and 4,650.96 is: 6,971.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.84 : 20,117.48 = 4,650.96 : x
  2. Step 2: Convert to fraction form
    13,420.84/20,117.48 = 4,650.96/x
  3. Step 3: Cross multiply
    13,420.84x = 20,117.48 × 4,650.96
  4. Step 4: Simplify right side
    13,420.84x = 93,565,594.78
  5. Step 5: Solve for x
    x = 93,565,594.78/13,420.84
  6. Step 6: Final answer
    x = 6,971.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.